Pivot-gun



L BEGKER.

PIVOT GUN.

APPLICATION FILED SEPT 41 1920.

1,376,793, Patented May 3,192 1.

JULIUS BECKER, 0F ESSEN', GERMANY, ASSIGNOR TO FRIED. KRUPP .AKTIEN- GESELLSCHAFT, OF ESSEN-ON-TI-IE-RUHR, GERMANY.

PIVOT-GUN.

Specification of LettersPatent.

li atented May 3, 1921'.

Application filed September 4, 1920. Serial No. 408,391;

To all whom it may concern:

Be it known that I, JULIUS BECKER, residing at Essen, Germany, a citizen of the ence to the accompanying drawings in which- Figure 1 is a vertical section substantially of the gun together with parts of the covered position and Fig. 2 is a portion of the left hand end view of Fig. 1. 7

Through an opening in the cover A, which shuts off the inner chamber B of the covered position from outside, projects a shaft C provided with a floor c and a tightly closed cover 0 Into the part of the shaft C, which is situated above the cover 0 projects the pedestal mounting D of the gun which is rigidly connected to the cover A. 1 Between the cover A and a flange d on the pedestal 'D is inserted a ackin rin The u er carriage E of the gun, in which the gun barrel F is mounted by means of horizontal trunnions f is adapted'to rotate relatively to the pedestal D about-the axis of the pivot pin e which is mounted in the pedestal.

The upper carriage E is prevented from being lifted oil? the pedestal by lugs c ,'which engage under a flange (Z on the pedestal D.

Between the gun barrel F and the upper carriage E is insertedan elevating gear and between the upper carriage and the pedestal D a traversing gear. The mechanism for operating the pointing gears is placed in the covered chamber B.

The elevation is imparted to the barrel F by the aid of a two-part thrust bar G G the axis of which coincides with the axis of the pivot pin 6 The lower part G of the thrust bar engages with a guide sleeve 0 rigidl fixed to'the floor '0 and in which the part can move longitudinally but cannot rotate.

"At the upper end the part G of the bar is enlarged into a sleeve 9 having an internal flange 9 between which flange and a two part cover 9 for the sleeve 9 is locatedan annular groovev into which fits a flange g on the upper part G of the rod. In this waythe two parts G' G of the thrust bar are connected to each other so that the'part G can rotate but not moveglongitudinally with movement is imparted to the bar G G by turning a hand wheel G the shaft 9 of which is carried in a bracket o rigidly connected to the floor of the shaft 0 The rotation of the shaft '9 is transmitted'by a worm gear 9 g to a toothed wheel 9 which cooperates with a rack g on the part G of the thrust bar Gr G The worm wheel 9 and the toothed wheel 9 are likewise mounted on the bracket 0 P The part G of the thrust bar, which passes through the cover "0 of the shaft C' and a boring of-the pivot pin e carries'on reference to the lower: part G. The liftingits end projecting between the walls of the under carriage E projections 9 (see Figs. 1 and 2) which fit into vertical guides 6 (see Fig. 2) on the walls of the upper carriage and it further carries a rack g". This rack cooperates with a toothed wheel 9 the shaft of which is carried in the upper T carriage and carries two toothed wheels g which gear with toothed sectors f mounted on the gun barrel FJ The elevation imparted to the gun barrel by raising or lowering the thrust bar can be read off by the gun layer on an elevation indicating disk G arranged at the level of the eyes in the shaft 0. V The pointer'g for this disk is rotated by means of aitoothed wheel 9 mounted on the wall of the shaft i and is driven by a rack 9 mounted on the part G of the thrust bar.

The traverse is imparted to the gun barrel by rotating a hand wheel H, the rotation of which hand wheel is transmitted by two pairs of bevelwheels h k and 72, h to a worm k and bearings c are provided for the shafts of this gearing on the shaft 0. The Worm 72,5 engages with worm wheel h which is fixed on a tubeVH rounds the bar G and is prevented. from moving longitudinally by a collar it" there on which engages between the body of a stufiing box h mounted on the cover'c and a nut h screwed to the body. On the end, which projects upward through the cover 0 the tube H carries a toothed wheel k which cooperates with a toothed wheel h. The vertical shaft k of the toothed wheel This tube H sur h, which is mounted in the pedestal D of tion as l 1i, on the ad ustment of the e le cheating pointer 9 so that special means (6. g. differential gears) for eliminatingthis actlon are not necessary. Furthermore the fact that bothgthe elevation lndicatln 7 pointer 9 and also the traverse lndlcating po1nter 72, are ad usted by one and thesame part of the operating mechanism (the bar G icontrlbutes to the simplificat on of the arrangement and also to accuracy injthe indication of the elevation and traverse 1mparted. It is also of advantage that the parts G and H of the operating mechanism of the two pointing devices are passed through one and the same opening in the cover 0 and that therefore at this point one packing merely'is necessary between the movable parts and one fixed part (0 This packing is only of small dimensions and is subjected to small strains so'that it can be kept permanently tight with ease.

Claims:

1. A; device of the class described comprising a pivot gun, a chamber, a shaft projecting from the wallet said chamber, a gun pedestal extending from said chamber at a point opposite said shaft, a gun carriage supported thereon, a cover-plate in said shaft, a two part thrust bar extending through said cover-plate, an elevating and traversing mechanism carried ,by the gun "are us ofth 7 comprising a pivot gun,a gun carriage, a pedestal tierefor, a chamber provided with an opening from which said pedestal projects, hollow shaft projecting from said opening in the opposite direction from the pedestal, a flooring and cover-plate for said hollow shaft, a two. part thrust bar extending through said cover-plate, a tube surrounding said thrust' bar and projecting through said cover=plate, a packing therefor, a'traversing gear mounted on the gun carriage, means operatably connecting said tube to the traversing gear and means within said hollow shaft for operating said'traversing gear. 7

5. An apparatus of the class described comprising a pivot gun, fa gun carriage, a pedestal there-for, chamber provided with an opening frolnwhich said pedestal projects, a' hollow shaft projecting from said opening in the opposite direction from the pedestal, a fioo'ring and cover-plate for said hollow shaft, a two part thrust bar-extending through said cover plate, a tube surrounding said thrust bar and projecting through saidcover-plate, a packing therefor, a traversing mechanism mounted on the gun carriage, means operatively connecting said tube to the said traversing mechanism, means contained in said hollow shaft for rotating said tube and an indicator operatively connected to said traversingmechanism for indicating the angle of traverse of the gun.

6. An apparatus of the class described comprising a pivot gun, a gun carriage, a pedestal therefor, a chamber provided with an opening from which said pedestal projects, a hollow shaft projecting from said opening in the opposite direction from the pedestal, a flooring and cover-plate for said hollow shaft, a two part thrust bar extending through said cover-plate, a tube surrounding said thrust bar and projecting through said cover-plate, a packing therefor, an elevating and traversing mechanism mounted on the gun carriage, means positioned within the hollow shaft for longitudinally moving the thrust bar and operating the elevating mechanism, means also positioned within said hollow shaft for rotating the sleeve to operate the traversing mechanism, the upper part of said thrust bar being rotatable independently of the lower part, and indicators positioned within said hollow shaft for indicating the degree of adjustment imparted to the gun barrel.

7. An apparatus of the class described comprising a pivot gun, a gun carriage, a pedestal therefor, a chamber provided with an opening from which said pedestal projects, a hollow shaft projecting from said opening in the opposite direction from the pedestal, a flooring and cover-plate for said hollow shaft, a two part thrust bar. extending through said cover-plate, a tube surrounding said thrust bar and projecting through said cover-plate, a packing therefor, a traversing and elevating mechanism mounted on the gun carriage,cmeans contained within said hollow shaft for longitudinally adjusting the thrust bar to operate the elevating mechanism, means-contained within said housing for rotating the tube to operate the traversing mechanism, said thrust bar being formed with a central aperture to receive cables of an electrical firing mechanism.

8. In an apparatus of the class described the combination with a closed chamber of a hollow shaft disposed in one of the walls of said chamber, a pedestal forming a continuation of said shaft and projecting out of said chamber, a cover for said hollow shaft, a gun mounted on said, pedestal and means contained in said shaft and passing through said cover for operating said gun.

9. An apparatus of the class described comprising a pivot gun, a gim carriage, a pedestal therefor, a closed chamber provided with an opening from which said pedestal pedestal therefor, a closed chamber provided with an opening from which said pedestal projects, a hollow shaft projecting rom said opening in the opposite direction of said pedestal, a cover plate for said hollow shaft, an elevating and traversing mech-' anism mounted on said carriage a two-part thrust bar extending'from said chamber to the elevating mechanism and projecting through said cover plate, a tube surrounding said thrust bar and projecting through saidicover plate, means operatively connectsaid tube to the traversing mechanism, means contained in said hollow shaft for op erating said tube and said thrust bar for traversing and elevating the gun barrel, means for packing said tube against said cover plate and means for packing said thrust bar, bothiof said packing means being accessible fromwithin said hollow shaft.

The foregoing Essen, Germany, this 2nd day of June, 1920.

JULIUS BECKER.

specification signed at 

